(:*******************************************************:)
(: Test: K2-SeqExprCast-51                               :)
(: Written by: Frans Englich                             :)
(: Date: 2007-11-22T11:31:21+01:00                       :)
(: Purpose: -0 is an invalid value for xs:negativeInteger. :)
(:*******************************************************:)
xs:negativeInteger("-0")